D. To change the direction of the current. 相关知识点: 试题来源: 解析 C。解析:保险丝在电路中的主要作用是防止过载。选项 A,保险丝不能增加电压。选项 B,测量电流的是电流表等仪器。选项 D,保险丝不能改变电流方向。阅读时要抓住“fuse”“electrical circuit”等关键词理解其在电路中的作用。
Answer to: What is used in an electrical circuit to prevent a short circuit? By signing up, you'll get thousands of step-by-step solutions to your...
When an electrical potential difference is applied between two points in a conductive medium, an electric current starts flowing from higher potential to lower potential. The higher the voltage or potential difference, the more the current flows between two points. If two points in a circuit are ...
Any two-pole circuit is guaranteed to meet the port condition by virtue of Kirchhoff's current law and they are therefore single-ports unconditionally. All of the basic electrical elements (inductance, resistance, capacitance, voltage source,current source) are single -ports, as is a general impe...
Ohm's law says that in an electrical circuit, the current passing through a resistor between two points, is related to the voltage difference between the two points, and inversely related to the electrical resistance between the two points. This relation is shown in the following pee ...
The current which reverses its direction every half of its cycle is known as alternating current. Generally, it is represented in sinusoidal form . {eq}i=i_o sin (\omega t +\phi) {/eq} where i is the current at time t {eq}i_o {/eq} is the...
a tiny silicon chip with an integrated circuit that is frequently used in computers or other electrical devices. The general term "chip" refers to semiconductor products and components. It serves as the wafer-sized integrated circuit's (IC) carrier. Integrated circuits are found i...
There are 2 types of Electric Current – AC (Alternating Current and DC (Direct Current. Electrical currentis the flow of charged particles. It is similar to flow of water molecules in a river. AC and DC are ways of flow of current an electrical circuit.Electric charge or current can flow...
GND full form is ground. it is very commonly used in electrical engineering as a basic concept. It works as a reference point of voltage in circuits and protects the circuit and the person working the circuit. It is a common return path of current to a p
Current is the rate at which electrons flow past a point in a complete electrical circuit. At its most basic,current = flow. Anampere(AM-pir), oramp, is the international unit used for measuring current. It expresses the quantity of electrons (sometimes called "electrical charge") flowing ...